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The Rates of Hypernovae and Gamma-Ray Bursts: Implications for their Progenitors

Ph. Podsiadlowski·P. A. Mazzali·K. Nomoto·D. Lazzati·E. Cappellaro
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Abstract

A critical comparison of estimates for the rates of hypernovae (HNe) and gamma-ray bursts (GRBs) is presented. Within the substantial uncertainties, the estimates are shown to be quite comparable and give a Galactic rate of $10^{-6}$ -- $10^{-5} $yr$^{-1}$ for both events. These rates are several orders of magnitude lower than the rate of core-collapse supernovae, suggesting that the evolution leading to a HN/GRB requires special circumstances, very likely due to binary interactions. Various possible binary channels are discussed, and it is shown that these are generally compatible with the inferred rates.

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Ph. Podsiadlowski, P. A. Mazzali, K. Nomoto, D. Lazzati, E. Cappellaro. 2004-03-17. The Rates of Hypernovae and Gamma-Ray Bursts: Implications for their Progenitors. https://doi.org/10.1086/421347

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